Ignition device for gas burners



Dec. 17, 1929. c. E. METHUDY IGNITION DEVICE FOR GAS BURNERS Filed Jan.23, 1928 2 Sheets-Sheet Dec. 17, 1929. c. E. METHUDY 1,739,851

IGNITION DEVICE FOR GAS BURNEBS Filed Jan! 25, 1928 2 Sheets-Sheet 2Patented Dec. 17, 1929 UNITED STATES PATENT OFFICE CARL E. METHUDY, OFST. LOUIS, MISSOURI,

00., OF EAST ST. LOUIS, ILLINOIS,

ASSIGNOR TO METHUDY ENAMEL RANGE A CORPORATION OF ILLINOIS IGNITIONDEVICE ro'n GAS BURNERS Application filedJanuary 23, 1928. Serial No;248,583.

ers'is ignited.

An object of the invention is to provide an improved ignition device forgas burners comprising a tubes opening therefrom toward the gas burnersand having in its lower portion a pilot light burner above which aguardis disposed in 'sucha way as to prevent extinction of the pilot lightwhen the gas entering said tubes is ignited by the pilot light.

Another objectof the invention is to provide an ignition device for gasburners where- 'in the pilot light casing is provided with a guard forthe pilot light supported above the plane of the end of the pilot lightburner and having an opening through which the flame of the pilot lightextends upwardly toward a perforated cap for the pilot light casing andacross the plane of openings toward gas burners. v

Another object of the invention is to provide an ignition devicecomprising a pilot light casing having tubular passage opening toward agas burner and an exhaust or relief opening opposite from the opening tosaid tubular passage andfunctioning as a relief for the explosive forceor wave resulting from ignition of gas in saidtubular passage andpreventing extinction ofthe pilot light.

Another object of the invention is to provide an ignition device of thecharacter last above mentioned wherein the casing is provided with acover having openings of novel arrangementcooperating to obtain theadvantageous results mentioned.

Other objects will appear from the following description, referencebeing made to the drawings in which Fig. 1 is a plan view of anembodiment of the invention for igniting the burners of a gas stove.

Fig. 2 is'a sectional view on the line 2-2 ot Fig. 1.

Fig. 3 is a sectional view on the line 33 of Fig. 1.

flash pilot light casing having .said elements.

tegral with the casing Fig. 4 is a sectional view of an improved type ofburner.

The burners 1 are supplied with gas through tubes 2 and have the usualopenings 3 through their upper walls for the emission of combustiblegas. To this extent these burners are of the general type used on gasranges and, in addition thereto, there is usually an oven burner (notshown), and for illustration of one of such oven burners reference ismade to my co-pending application Serial No. 207,391, filed July 21,1927, which has resulted in Patent 3, 1928. As shown in said applicationI also modlfy the usual construction of the burners- 1 by providing agas outlet 4 through the side' wall of each burner.

Arms 5 extend from the burners 1 for supporting prising parts. burnertip 6 located between the cluster of burners 1 and supplied with gasthrough a ipe 7. v A preferred type of pilot light device is shown inFig. 4 wherein it is seen that the tip 6 is provided with a conicalrecess 6 and the end of the pipe 7 on which said tip is screwed isprovlded with a similar inverted conical recess 7 The walls of therecesses 6 and 7 are notched or grooved and one of said walls is ofsofter metal than the ball valve 8 confined in the chamber formed by Theburner tip may be screwed onto the pipe 7 to clamp the ball valve 8=firmly between the tip and the end of the pipe and restrict the passageof gas; or said burner tip may be loosened slightly to permit passage ofwhen the ball is tightly clamped. So 1t is apparent that by adjustmentof the burner tip on the pipe the valve 8 may be effectively controlledto regulate the amount of gas that may pass through the burner tip forcombustion. The burner tip extends into the lower end of a pilot lightcasing 8 from which tubes 9 extend to engagement with the arms 5 havinglugs 10 engaging in holes in said arms 5 (Fig. 2). As shown, the tubes 9are cast in- 8. A wall for the lower end of the casing 8 is provided,the

the pilot light housing and connected No. 1,675,899, issued July thatpart of the ignition device com- -70 The pilot light devlce comprlses amore gas than can passsame comprising a plate 11 having projectlons 12releasably engaging an internal flange 13 at the lower end of the casing8. The plate 11 has a number of openings 14 around the burner tip toadmit air to the casing; and the casing 8 is formed with a circumferential series of openings 15 in a plane below the upper end of-theburner tip 6.

casing Son the shoulder 16, and is located below the openings to thetubes 9 and above the burner tip. This guard has a hole 18 alined withthe burner tip through which hole a continuous flame of the pilot lightrises. A number of holes 19 are formed through the guard 17 between theflame opening 18 and the edge of said guard.

This device is designed and adaptedto ignite gas issuing from the ovenburner at a considerable distance from said device, as disclosed in mysaid co-pending application. For this purpose a tube 20 opens from oneside of the casing 8 for connection with a pipe 21 adapted to receivegas issuing from the oven burner and directively control the pressurewave resulting from the ignition of said gas by the pilot light. Whenthe gas issuing from the oven burner becomes ignited there is a returnpressure wave through the pipe 21 into the casing 8, as there is areturn-pressure wave to said casing 8 when the gas issuing from any ofthe burners 1 is 1gnited as a result of gas entering the tubes 9 fromthe openings 4 and becoming ignited by the pilot light. -As shown, thetubes 9 extend approximately radially from the casing 8 so that thereturn pressure wave in each of said tubes 9 is relieved or exhaustedthrough an opposite tube 9. For relieving and exhausting the returnpressure wave from the pipe 21 and the tube 20 a similar tubularprojection 22 is provided, the same opening from the opposite side ofthe casing 8.

The pilot light casing is provided with a cap, the same comprising adisc 23 having a peripheral flange 24 engaging around the upper end ofsaid casing 8 and aprojection 24 engaging in a notch in the end of thecasing 8 to facilitate proper location of the cap on the casing .andprevent the cap from turning (Fig. 3). A series of holes 25 is formedthrough the cap 23 for the escape of the products of combustion'of thegas and for relieving the pressure waves. In addition to the holes 25 Iprovide alarger hole 26 in the cap 23 above the plane of the opening tothe tube 20, since there is a greater pressure wave resulting fromignition of the gas issuing from the oven burner than results fromignition of gas issuing from any of the. burners 1. h I In the use of mydevice it will be observed (Figs. 2 and 3) that the principal point ofcombustion of the flame issuing from the burner tip 6 is below the guard17 and above the openings 15 in the casing 8. Thus, the flame isprotected from any currents of air or gases which might enter the casing8 through the holes 15 or through the tubes 9, 2001' 22. In addition,the cap 23, having its holes 25 and 26 out of al'inement with the hole18in the guard 17, prevents the direct impingement upon the pilot flameof any currents of air passing through the holes 25 and 26; In thismanner I provide a means for preventing the pilot flame from becomingextinguished under any adverse conditions that might arise, as by strongdrafts or the like.

From the foregoing it must be apparent that my invention attains all ofits intended objects and purposes in a highly efficient and satisfactorymanner. The device is of comparatively inexpensive construction and maybe installed easily and, in the specific form shown, without regard asto whether the-pipe I do not restrict myself unessentially,' butcontemplate such variations as may be found advisable.

I claim:

.1. A device of the-character described comprising a pilot light casinghaving flash openings therefrom, a pilot light burner tip extendingupwardly into said casing and ter-- minating below-the plane of saidopenings, and a guard within and wholly supported by said casing abovesaid burner tip and below saidopenings and having a hole above saidburner tip and a series of holes between said first named hole and thewall of said casing.

2. A device of the character described comprising a pilot light casinghaving series of outlets therefrom and series of air inlet openings inits lower end, a pilot light burner tip extending upwardly intosaidcasing and terminating above the plane of said inlet openings and belowsaid outlets, a guard supported in said casing above said burner tip andbelow said outlets and having a hole above said burner tip, and a Coverfor said casing having a relatively large hole above one of said.

3. A device of the character described comprising a pilot light casing,a tube opening from one side of said casing for directively controllinga pressure wave resulting from ignition of gas in said tube, a laterallyextended tube opening into the opposite side of said cover for saidcasing.

4. A device of the character described comprising a pilot light casing,a tube opening from one side of said casing, an additional tube openingfrom the diametrically opposite side of said casing, each of said tubesbeing adapted to engage an end of a pipe for directively controlling apressure wave resulting from ignition of gas in said pipe, a guard inand wholly supported by said casing below the openings to said tubes andhaving a hole therethrough, a pilot light burner tip in said casingbelow said hole, and a cap attached to the upper end of said casing andhaving a relatively large hole laterally from the vertical plane of saidpilot and above the plane of the opening of the tube connected with saidpipe;

5. A device of the character described comprising a pilot light casing,a tube opening from one side of said casing, an additional tube openingfrom the diametrically opposite side of said casing, each of said tubesbeing adapted to engagean end of a pipe for direztively controlling apressure wave resulting from ignition of gasin said pipe, a guard insaid casing below the openings to said tubes and having a holetherethrough, a pilot light burner tip in said casing below said hole,and a cap attached to the upper end of said casing and having arelatively large hole above the plane of the opening of the tubeconnected with said pipe and also having a number of relatively smallholes therethrough.

' 4 6. A deviceof the character described comprising a pilot lightcasing, a number of tubes integrally united with and opening from saidcasing, for directively controlling pressure waves caused by ignition ofgas entering said casing through said tubes, a pipe engaged with one ofsaid tubes, a flash pilot light burner tip extending upwardly into saidcasing, for igniting gas entering said casing from said tubes, a guardin said casing above the end of said burner tip and below the openingsto said tubes and having a flame orifice above said burner tip, and aperforated cap in connection with the upper end of said casing.

7. A device of the character described comprising a pilot light casinghaving a number of air inlet openin s through the wall thereof, a numberof tu s integrally united with an opening from said casing above'saidair inlet open1ngs,,a wall for the lower end of said casing, means forreleasably holding said wall in connection with the lower end of saidcasing, a pipe extending through said wall, a flash pilot light burnertip attached to said pipe in said casing above said lower end 4 wall andextending upwardly above said air inlet openings and terminating belowthe openings to said tubes, and a guard in said casing above said airinlet openingsand said burner tip and below said openings to said tubesand having a flame orifice above said burner tip.

8. A device of the character described com prising a pilot light casinghaving flash openings therefrom, a cover for said casing having a holeabove, one of said openings and having a number of additional holeswhich are smaller than said first named hole, means for holding saidcover from turning on said casing, a pilot light burner tip extendingupwardly into said casing and terminating below the plane of saidopenings, and a guard within and wholly supported by said casing abovesaid burner tip and below said openings and having a hole above saidburner tip and a number of additional holes smaller than said hole whichis above said burner tip.

9. A device of the character described comprising a pilot light casinghaving a series of flash openings therefrom and a series of air inletopenings in its lower end, a removable and releasable cover for saidcasing having a number of holes therethrough one of which is above oneof said openings and is of larger size than any of the remainder of saidholes, a pilot light burner tip extending upwardly into said casing andterminating above the planeof said inlet openings and below said flashopenings, supporting means in said casing, and a guard within saidcasing and wholly supported by said supporting means above said burnertip and below said flash openings and having a hole above said burnertip.

10. device or the character described comprlsing a pilot light casinghaving a se-' ries of flash openings therefrom and a series of air inletopenings at its lower end, supporting means in the casing below saidflash openings, a guard mounted wholly within the casing and whollysupported by said supporting means and having a central holetherethrough, a pilot light burner tip extending upwardly into saidcasing and terminating above the plane of said inlet openings and belowsaid hole through said guard, and a cover for said casing having aseries of holes therethrough.

11. A device of the character described comprising a pilot light casinghaving a series of air inlet openings above its lower end, a tubeopening from one side of said casing for directively controlling apressure wave resulta support in said casing below the openings to saidtubes, a guard within the casing and wholly supported by said supportand having its upper surface below the openings to said tubes and beingprovided with a central hole, and a pilot light extending upwardly intosaid casing and terminating above said inlet openings and below saidhole through said uard. g 12. A device of the character describedcomprising a pilot light casing having a series of air inlet openingsabove its lower end, a tube opening from one side of said casing fordirectively controlling a pressure Wave resulting from ignition of gasin said tube, a laterally extended tube opening into the opposite sideof said casing from said first named tube, a support in said casingbelow the openings to said tubes, a guard Within the casing and whollysupported by saidsupport and havingits upper surface'below the openingsto said tubes and being provided with a central hole, a pilot lightextending upwardly into said casing and terminating above said inletopenings and below saidhole through said guard, and a cover mounted onthe upper end of said casing and having a relatively large holetherethrough above the opening to one of said tubes and also havingtherethrough a number of smaller holes.

13. A device of the character described comprising a pilot light casing,a number oftubes rigid with and opening into said casing, means inconnection with said tubes for holding said casing and said tubes inproper relatfonship to gas burners, supporting means in said casingbelow the openings to said tubes, a guard in said casing mounted on saidsupporting means and having a central hole therethrough and a series ofholes between said central hole and the wall of said casing, a pilotlight burner tip in said casing below said central hole in said guard,and a lower end Wall attached to said casing below said burner tip.-

CARL E. M ETHTTDY CERTIFICATE OF CORRECTION.

Patent No. l, 739, 851.

Granted December 17, i929, to

CARL E. METHUDY.

It is hereby certified that the above numbered patent was erroneouslyissued, to "Methutly Enamel Range 00.", whereas said patent should havebeen issued to "Methudy Automatic Lighter Company, oi East St. Louis,Illinois, a Corporation of Illinois", said corporation being assignee ofthe entire interest in said inven tion, as shown by the records ofassignments in this office: and that the said Letters Patent should beread with this correction therein that the same may conform to therecord of the case in the Patent Office.

Signed and sealed this 24th day of June, A. D. 1930.

LSeal l M. .l, Moore,

Acting Commissioner of Pat ents,

CERTIFICATE or connse'rion.

Patent No. 1,739,851.. Granted December 17, 1929; to

CARL E. METHUDY.

it is hereby certified that the above numbered patent was erroneouslyissued to "Methudy Enamel Range Co.", Whereas said oatent should havebeen issued to "Methudy Automatic Lighter Company, of East St. Louis,illinois, a Corporation oi iliinois", said corporation being assignee ofthe entire interest in said invention, as shown by the records ofassignments in this otiiee; and that the said Letters Patent shouid heread with this correction therein that the same may conform to therecord of the case in the Patent Office.

Signed and sealed this 24th day of June, A. D. 1930.

hi. J. Moore, (Seai) Acting Commissioner of Patents.

